The version 1.03 of the open database contains 1,183,368 brain signals of
2
seconds each, captured with the stimulus of seeing a digit (from 0 to 9)
and thinking about it, over the course of almost 2 years between 2014 & 2015, from a single Test Subject David Vivancos.

This MindBigData The "MNIST" of Brain Digits is made available under the
Open Database License: http://opendatacommons.org/licenses/odbl/1.0/.
Any rights in individual contents of the database are licensed under the
Database Contents License:
http://opendatacommons.org/licenses/dbcl/1.0/